The Supreme Court will ponder the future of television on Tuesday when it hears arguments about the legality of Aereo, an Internet-television service. If the court says Aereo’s current operations are illegal, it’s curtains for the company. On the other hand, a ruling that Aereo is legal could tilt the balance of the TV industry in favor of the cord cutters, ushering in a revolution in the way we watch—and pay for—television service. Or not: Aereo may well convince the courts that it is legal and ultimately lead to little or no change in television.